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Airworthiness Directive 2008-24-13

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Official AD 2008-24-13 · FR doc E8-28270 · 2008-12-04 · turbine engine

Airworthiness Directives; Pratt & Whitney PW4000 Series 94-Inch Fan Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for Pratt & Whitney (P&W) PW4052, PW4056, PW4060, PW4062, PW4152, PW4156A, PW4158, PW4460, and PW4462 turbofan engines. This AD requires a onetime visual inspection of all EEC-131 model electronic engine controls (EECs). This AD also requires the EECs to be identified, categorized by group number, marked, and replaced using a fleet management plan. This AD results from a report of an uncommanded engine in-flight shutdown due to defective EEC pulse width modulator (PWM) microcircuits. We are issuing this AD to prevent uncommanded in-flight engine shutdowns which could result in loss of thrust and prevent continued safe flight or landing.

Which aircraft AD 2008-24-13 applies to

MakesPratt & Whitney
ModelsPW4052, PW4056, PW4060, PW4062, PW4152, PW4156A, PW4158, PW4460, PW4462, PW4000

Installed on, but not limited to, Airbus A300-600 and A310-300, and Boeing 747-400, 767-200, 767-300, and MD-11 series airplanes.

Whether AD 2008-24-13 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.
Date — When the work was done.
Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.
Signature & certificate — The A&P/IA who returned it to service, with certificate number.
Is AD 2008-24-13 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.